Merge rubygems master.

  This is RC version of Rubygems 2.7.0.
  https://github.com/rubygems/rubygems/commit/688fb7e83c13c3fe7c2bb03c49a2db4c82852aee

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@60133 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 17 insertions, 3 deletions

diff --git a/lib/rubygems/version.rb b/lib/rubygems/version.rb
index 17dd7b0795..ff5c1c1e72 100644
--- a/lib/rubygems/version.rb
+++ b/lib/rubygems/version.rb
@@ -170,7 +170,7 @@ class Gem::Version
   # True if the +version+ string matches RubyGems' requirements.
 
   def self.correct? version
-    version.to_s =~ ANCHORED_VERSION_PATTERN
+    !!(version.to_s =~ ANCHORED_VERSION_PATTERN)
   end
 
   ##
@@ -241,7 +241,7 @@ class Gem::Version
   end
 
   def hash # :nodoc:
-    @version.hash
+    canonical_segments.hash
   end
 
   def init_with coder # :nodoc:
@@ -335,7 +335,7 @@ class Gem::Version
 
   def <=> other
     return unless Gem::Version === other
-    return 0 if @version == other._version
+    return 0 if @version == other._version || canonical_segments == other.canonical_segments
 
     lhsegments = _segments
     rhsegments = other._segments
@@ -360,6 +360,13 @@ class Gem::Version
     return 0
   end
 
+  def canonical_segments
+    @canonical_segments ||=
+      _split_segments.map! do |segments|
+        segments.reverse_each.drop_while {|s| s == 0 }.reverse
+      end.reduce(&:concat)
+  end
+
   protected
 
   def _version
@@ -375,4 +382,11 @@ class Gem::Version
       /^\d+$/ =~ s ? s.to_i : s
     end.freeze
   end
+
+  def _split_segments
+    string_start = _segments.index {|s| s.is_a?(String) }
+    string_segments  = segments
+    numeric_segments = string_segments.slice!(0, string_start || string_segments.size)
+    return numeric_segments, string_segments
+  end
 end